Blueberry Streusel

Ingredients

170 gr butter
200 gr sugar
1 egg
250 gr all purpose flour
9 gr double-acting baking powder
2 gr baking soda
1 gr salt
120 ml buttermilk
2 blueberries
65 gr flour
3 gr cinnamon
1 gr nutmeg

Instructions

Cream butter and sugar. Beat in egg. Sift dry ingredients together and add, alternately with buttermilk, to butter mixture. Pour into well-greased 9 x 13 pan. Top with blueberries. Mix sugar, flour, and spices. Cut butter into tablespoons and blend into dry ingredients with a pastry blender. Mixture should be crumbly. Sprinkle over blueberries. Bake at 180ºC or 35 minutes.